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Finding the Fourth Proportional to 346,849.60, 520,063.20 and 136,235.20

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Solution

The fourth proportional to 346,849.60, 520,063.20 and 136,235.20 is: 204,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,849.60 : 520,063.20 = 136,235.20 : x
  2. Step 2: Convert to fraction form
    346,849.60/520,063.20 = 136,235.20/x
  3. Step 3: Cross multiply
    346,849.60x = 520,063.20 × 136,235.20
  4. Step 4: Simplify right side
    346,849.60x = 70,850,914,064.64
  5. Step 5: Solve for x
    x = 70,850,914,064.64/346,849.60
  6. Step 6: Final answer
    x = 204,269.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.